1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* 3 * Trap handling definitions. 4 * 5 * Copyright (C) 2002, 2003 Maciej W. Rozycki 6 */ 7 #ifndef _ASM_TRAPS_H 8 #define _ASM_TRAPS_H 9 10 /* 11 * Possible status responses for a board_be_handler backend. 12 */ 13 #define MIPS_BE_DISCARD 0 /* return with no action */ 14 #define MIPS_BE_FIXUP 1 /* return to the fixup code */ 15 #define MIPS_BE_FATAL 2 /* treat as an unrecoverable error */ 16 17 extern void (*board_be_init)(void); 18 extern int (*board_be_handler)(struct pt_regs *regs, int is_fixup); 19 20 extern void (*board_nmi_handler_setup)(void); 21 extern void (*board_ejtag_handler_setup)(void); 22 extern void (*board_bind_eic_interrupt)(int irq, int regset); 23 extern void (*board_ebase_setup)(void); 24 extern void (*board_cache_error_setup)(void); 25 26 extern int register_nmi_notifier(struct notifier_block *nb); 27 extern void reserve_exception_space(phys_addr_t addr, unsigned long size); 28 extern char except_vec_nmi[]; 29 30 #define VECTORSPACING 0x100 /* for EI/VI mode */ 31 32 #define nmi_notifier(fn, pri) \ 33 ({ \ 34 static struct notifier_block fn##_nb = { \ 35 .notifier_call = fn, \ 36 .priority = pri \ 37 }; \ 38 \ 39 register_nmi_notifier(&fn##_nb); \ 40 }) 41 42 #endif /* _ASM_TRAPS_H */ 43